How to enable FXP on ISPCONFIG 3?

I want to enable FXP for the PureFTPD. I realize it has to be started with the -w -x flags (I believe anyway). However, I cannot find the configuration file for the life of me. Everything refers back to PURE-FTP-MYSQL.

Can someone please help me out? Tell me where the config files are, or how to start the daemon with such flags?

You would have to use one of the configuration files in /usr/share/man/man8/ if you wanted ftp starting with a perl wrapper from command line but to make these flags default for your ISPConfig users you'd have to work the flags into the ISPConfig scripts.

EG: the normal flag for "don't resolve" is -H or "--dontresolve" I think and if you take a look at: